First figure out why you want the students to learn the subject and what you want them to know, and the method will result more or less by common sense.
Before I was born, my father told my mother, 'If it's a boy, he's going to be a scientist.'
It has not yet become obvious to me that there's no real problem. I cannot define the real problem; therefore, I suspect there's no real problem, but I'm not sure there's no real problem.
Once I get on a puzzle, I can't get off.
Physics has a history of synthesizing many phenomena into a few theories.
It is necessary to look at the results of observation objectively, because you, the experimenter, might like one result better than another.